We should be using profile_pc in oprofile_add_sample so that lock
contention is attibuted to the correct function in profile output.  Also
fix SH7750 support.
Signed-off-by: Zwane Mwaikambo <zwane@fsmlabs.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>